Dude, make some hot cocoa, that simple, just take some whole milk, break up about a gram per cup of cocoa, bring the milk to a boil with the weed in it for about an hour, drain the pot and put the milk away, that way all you have to do is heat the milk up over the fire and had the cocoa mix. No evidence, no smell, no worries. They'll just think you're drinking hot cocoa. But good luck with however you decide to do it.